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Old 08-29-2017, 06:04 AM   #14
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Join Date: Oct 2007
Posts: 21,371
"It contains circuitry that monitors the voltage and switches the batteries together for charging or apart for use when not charging."

Great , but why bother, with costly complex electronics??

There is no charge unless the engine is running , so joining the house to the start batt , after engine start is all that is required .
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